| 摘要 |
The pickup roller is placed above a lifting plate made of a flexible material and feeds the sheet with abutting on an upper surface of the sheets loaded on the lifting plate. The sensor detects an arrival of the sheet fed by the pickup roller on a downstream side of the pickup roller. The abnormality detection unit detects the sheet feeding abnormality of the sheet fed by the pickup roller based on the drive start time of the pickup roller and the time sheet detection by the sensor. The abnormality detecting condition correction unit corrects the abnormality detecting condition of the abnormality detection unit depending on the amount of sheets on the lifting plate. |
